Winterwood — J.G. Faherty

You'd better watch out!
No one in Anders Bach's family believed his old tales of Winterwood, a place where Krampus and his Wild Hunt rule a frozen land and where bad children don't get coal for Christmas, they get baked into pies or forced into slavery. But now the Yule Lads have kidnapped Anders's grandsons, and he has to rescue them before they're lost forever. Anders and his daughter must cross the divide between worlds and enter Winterwood, where evil holds sway and even the reindeer have a taste for human flesh. By the time the sun rises, they'll learn the awful truth about Winterwood: there is no escape without sacrifice.